Answer:
Step-by-step explanation:
3mn (m+y)
= 3n + 3mny
Correct answer: <span>Dot-and-cross-diagram
</span>
Dot-and-cross diagrams are used to represent covalent bonds. The shared electron from one atom is shown as a dot, while the shared electron from the other atom is shown as a cross.
When drawing dot-and-cross diagrams for covalent bonds, you only need to show the electrons in the highest occupied energy level, as only these are involved.
Answer:
X = 90 degrees
Y = 40 degrees
Z = 50 degrees
Step-by-step explanation:
Answer:
Step-by-step explanation:
4(y+7)=4(y)+4(7)
=4y+28
Answer:
Step-by-step explanation:
Multiply both sides by 3
Add both sides